Lower sash window



FIG. 1 is a perspective view illustrating a lower sash window in accordance with my new design;

FIG. 2 is a back view of the lower window sash illustrated in FIG. 1;

FIG. 3 is a front view of the lower window sash illustrated in FIG. 1;

FIG. 4 is a sectional view taken along the line 4--4 of FIG. 2;

FIG. 5 is a sectional view taken along the line 5--5 of FIG. 2; and,

FIG. 6 is a sectional view taken along the line 6--6 of FIG. 2. 

The ornamental design for a lower sash window, as shown. 